scholarly journals A study of weathered coal spectroscopic properties

2017 ◽  
Vol 128 ◽  
pp. 51-58 ◽  
Author(s):  
Janis Krumins ◽  
Zhiping Yang ◽  
Qiang Zhang ◽  
Min Yan ◽  
Maris Klavins
1971 ◽  
Vol 32 (C1) ◽  
pp. C1-1024-C1-1025 ◽  
Author(s):  
C. J. ELLIS ◽  
K. A. GEHRING ◽  
M. J. M. LEASK ◽  
R. L. WHITE

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